Question

Hormones must bind a receptor to elicit a cell response, regardless of whether they operate locally or at long distances?

Answer 1

Hormones cause changes in target cells by binding to specific cell-surface or intracellular hormone receptors. The number of receptors that respond to a hormone determines the cell's sensitivity to that hormone. Receptor binding alters cellular activity and results in an increase or decrease in normal body processes.

Step-by-step explanation:

Hormones cause changes in target cells by binding to specific cell-surface or intracellular hormone receptors, molecules embedded in the cell membrane or floating in the cytoplasm with a binding site that matches a binding site on the hormone molecule.

The number of receptors that respond to a hormone determines the cell's sensitivity to that hormone.

Receptor binding alters cellular activity and results in an increase or decrease in normal body processes. Depending on the location of the protein receptor on the target cell and the chemical structure of the hormone, hormones can mediate changes directly by binding to intracellular hormone receptors and modulating gene transcription, or indirectly by binding to cell surface receptors and stimulating signalling pathways.